3924649 has 2 divisors, whose sum is σ = 3924650. Its totient is φ = 3924648.

The previous prime is 3924617. The next prime is 3924677. The reversal of 3924649 is 9464293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3705625 + 219024 = 1925^2 + 468^2 .

It is a cyclic number.

It is not a de Polignac number, because 3924649 - 2⁵ = 3924617 is a prime.

It is not a weakly prime, because it can be changed into another prime (3924689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1962324 + 1962325.

It is an arithmetic number, because the mean of its divisors is an integer number (1962325).

Almost surely, 2^3924649 is an apocalyptic number.

It is an amenable number.

3924649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3924649 is an equidigital number, since it uses as much as digits as its factorization.

3924649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 37.

The square root of 3924649 is about 1981.0726892267. The cubic root of 3924649 is about 157.7370110940.

It can be divided in two parts, 392 and 4649, that added together give a square (5041 = 71²).

The spelling of 3924649 in words is "three million, nine hundred twenty-four thousand, six hundred forty-nine".